Speed-changer.



4.. 0 9 l 5, Y L U J D E T N E mL A D..

.R.. me G EN ...D LA EH DC .s .|...E Am 5 1 l, 6 7 o. N

APPLICATION FILED MAB. 28, 1904.

2 SHEETS-SHEET 1.

)l0 MODEL.

Inventer 5 e?,

wmw LA) YJ Attorney Witnesses:

' WL. s. MMU.

No. 764,115. PATBNTED JULY 5, 1904. A. L. DBLEBUW.

SPEED CHANGER.

APPLIUATION FILED MAB.. 28, 1904.

N0 MODEL. y 2 SHBETS-SHEET 2.

Witnesses: Inventor imw. y 1.5 w. 52,8;

M. s. MAW, Attorney j UNITED STATES Patented July 5, 1904.

PATENT OFFICE.

ADOLPH L. DE LEEUW, OF HAMILTON, OHIO, ASSIGNOR TO'THE NILES TOOL VORKSCOMPANY, OF HAMILTON, OHIO.

SPEED-CHANGER.

SPECIFICATION forming part of Letters Patent No. 764,115, dated July 5,1904.

Application iiled March 28, 1904.

To all whom, it may concern: g

Be it known that I, ADoLPH L. DE LEEUW, a citizen of the United States.residing in Hamilton, Butler county, Ohio, (post-office address, careNiles Tool T01-ks Company, Hamilton, Ohio,) have invented certain newand useful Improvements in Speed-Changers, of which the following is aspecification.

This invention, pertaining to improvements in speed-changers of thattype in which rotary motion is transmitted by friction between the faceof a rotating plate and the periphery of a disk, the rate of speed beingadjusted by shifting radially the point of contact on thel plate, willbe readily understood from the following description, taken inconnection with the accompanying drawings, in which- Figure I is avertical section in a plane coinciding with the axis of the plates of aspeedchanger exemplifying my present invention; Fig. 2, a verticalsection of the same in a plane at right angles to the axis of theplates; Fig. 3, a plan of one of the plate-bearings; and Fig. 4 a plan,enlarged, of the eye of the tension member.

In the drawings, l indicates the general iixed housing of the structuretaking the form in the illustration of a drum-like casing; 2, aremovable bonnet forming one of the facewalls of the housing; 3, openhubs projecting outwardly from the center of the face- .walls of thehousing; 4, one of the two shafts of the system, which shaft for thepurposes of this specification will be considered as the drivenshaft-that is to say, the final shaft of the apparatus-this shaft beingjournaled in the housing with its axis intersecting that of the housing,the upper portion of this shaft being the one from which the power is tobe taken off in the arrangement illustrated; 5, a step-bearing carriedby the lower portion of the housing for the lower end of the shaft; 6,the main disk, splined on the driven shaft1 above the axis of thehousing, this disk being illustrated as of usual construction involvingrings of leather or the like between clamp- .plates; 7, arack-sleeveforming the upper bearing for the driven shaft and arranged to slidethrough a bearing in the upper portion Serial No. 200,267. (No model.)

of the housing, this rack-sleeve having its lower end swiveled to maindisk 6, so that the vertical adjustment of the rack-sleeve adjusts themain disk to and from the axis of the housing; 8, a pinion mounted inthe housing and engaging the rack-sleeve and provided with a hand-wheel,the pinion thus serving in vertically adjusting the main disk, thebearing in which the rack-sleeve slides being split and provided with aclamp-screw to hold the yparts in adjusted position, as usual in devicesof this general class; 9, an oil-saucer on the upper portion of the maindisk around the. rack-sleeve, serving to receive oil and deliver it tothe swivel-joint coupling the foot of the non-rotary rack-sleeve to themain disk; l0, the secondary disk, similar in construction to the maindisk and disposed in the same axial line, but below the axis of thehousing, this disk being a non-adjustable disk vertically supported bythe housing, but not otherwise journaled, the bore of its hub beingentirely free of that portion of the driven shaft passing through it;1l, an oil-saucer carried by the driven shaft over the hub of thesecondary disk and serving to receive oil coming down the driven shaftfrom above and to discharge it through the hub of the secondary disk tothe lower hub-bearing thereof and to the step-bearing of the drivenshaft;

, 12, an oil-saucer upon the upper face of the secondary disk to servein catching such oil as may be delivered outwardly from above the hub ofthis disk and to deliver that oil through a drain-channel into the lowerwastespaces of the housing; 13, plate bearings articulately mounted inthe open hubs of the housing; 14:, plate-hubs turning in these bearings;15, a-clutch at the outer end of one of the plate-hubs to serve forconnection with the driving shaft of the system, this clutch beingillustrated as of the jaw type, so that the driving-shaft will have aflexible connection with the plate -hub on which this clutch isprovided; 16, the main plate, fast onthe inner end of the plate-hubcarrying the clutch 15, this plate having an inner iiat face engagingthe periphery of the two disks; 17, trunnions articulately supportingthe plate-bearings in the open hubs of the housing, the axes of thesetrunnions being at right angles to the axis of the driven shaft; 18, thesecondary plate, similar to the main plate and similarly mounted, butengaging that portion of the disk opposite that engaged by the mainplate; i9, a tension-rod stretching across the housing in the axial lineof the plates to serve in drawing' the plates forcibly to the disks,this tension-rod having at its mid-portion an eye loosely surroundingthe driven shaft; 20, a ball-bearing carried by the tension-rod Withinthe hub ofthe main plate, this ball-bearing comprising the usual pair ofrace members with balls between them, both members being loose on thetension-rod; 21, a globular bearing-joint between the inner member ofball-bearing 20 and the plate-surface on which it bears, the tensionrodhaving an outer nut and washer between which and the plate theball-bearing is held; 22, a hand-wheel threaded on the secondary end ofthe tension-rod exterior to the housing' to serve in pressing the platesto the disks; 28, a collar splined upon the tension-rod just inwardly ofhand-wheel 22, this collar having .a globular inner face; Q4, aball-bearing, similar to the one before considered, disposed betweencollar 23 and the outer end of the hub of the secondary plate, thisball-bearing being free of the tension-rod, and 25 a pin projecting fromcollar 23 and engaging aslot in the plate-bearing in which that collaris disposed, this pin-and-slot arrangement permitting movement of thecollar endwise of the tension-rod, but restraining its rotation.

Devices of this class have generally misbehaved, because of theinability of the plates to properly adapt themselves to the disks,erratic construction, varying compressibility, and varying wear on thepart of the disks, resulting in conditions not to be satisfied if thefaces of the plates are rigidly held in parallel relationship. In thepresent construction the rocking of the plate-bearings permits theplates to assume non-parallel positions to accommodate the disks andwithout imposing bending strains upon the driven shaft. The secondarydisk is so far as Athe plates are concerned a iioating disk withoutlateral influence on the driven shaft and capable of lateral shiftingrelative to the' primary disk which is the controlling element of fixedlateral position. The transmitted speed is varied in an obvious mannerby shifting the primary disk radially upon the plates. The secondarydisk is preferably mounted in a position corresponding with themid-position of the primary disk.

It is of high importance in devices of this class with disk edges orplate-faces of leather or analogous material that oil be kept away fromthe points of driving contact, and it will be noted that in the presentconstruction the saucer and drainage system provides for adequatelubrication of the parts on the driving-shaft along with satisfactoryprotection l for the frictional driving-points.

The mechanism for adjusting the squeeze of the plates upon the diskswhile itself non-rotary is self-contained within the rotary-plate systemand acts by tension without independent pressure abutment. The thrustdue to the squeeze is taken by the ball-bearings, and the globularsystem of mounting the tension-rod within the plate-hubs permits the rodto accommodate itself to the varying plate positions. Globular bearing2l, while subject to constant rocking in all directions relative to themain plate, is not a rotary bearing-that is to say, the plate member ofthe ball-bearing and the plate itself do not or at least need not turnrelative to each other. This globular bearing provides iiexibilitybetween the tension-rod and the main plate, the two members of theball-bearing at this point rocking with the tension-rod. Theball-bearing 24 at the other end of the tension-rod rocks with thesecondary plate instead of with the rod, globe-faced collar 23 providingfor the rocking of this plate relative to the rod and also for thelateral shifting of the parts relative to each other. Collar 23 beingsplined onthe rod and to the plate-bearing prevents the rotation of therod, the pin-and-slot arrangement connecting the collar with the bearingserving to permit the relative rocking of the rod and the bearing andthe plate carried by the bearing.

I claim as my inventionl. In aspeed-changer, the combination,substantially as set forth, of a shaft, a pair of rotary plates with theirfaces opposing and on opposite sides of the axis of said shaft, bearingsproviding' ljournal-support for said plates, a pivotal support for oneof said bearings arranged to permit one of the plates to rock relativeto the other upon an axis at right angles to said shaft, a disk carriedby said shaft between the faces of lthe plates, means for shifting saiddisk radially upon the plates, a secondary disk between the plates onthe opposite side of the axis of the plates and with its axissubstantially in line with the first disk, mechanism for urging theplates forcibly to the disks, and a coupling connected with one of theplates for the reception of a second shaft.

2. In aspeed-changer, thc combination, substantially as set forth, of ashaft, a pair of rotary plates with their faces opposing and on oppositesides of the axis of said shaft, bearings providing' journal-support forsaid plates, a pivotal support for said bearings arranged to permit theplates to rock relative to each other upon axes at right angles to saidshaft, a disk carried by said shaft between the faces of the plates,means for shifting said disk radially upon the plates,asecondary diskbetween the plates on the opposite side of the axis of IOO the platesand with its axis substantially in line with the first disk, mechanismfor urging the plates forcibly to the disks, and a coupling connectedwith one of the plates for the reception of a second shaft.

3. In aspeed-changer, the combination, substantially as set forth, of ashaft, a pair of rotary plates with their faces opposing and on oppositesides of the axis of said shaft, bearings providing journal-support forsaid plates, a pivotal support for one of said bearings arranged topermit one of the plates to rock relative to the other upon an axis atright angles to said shaft, a disk carried by said shaft between thefaces of the plates, means for shifting said disk radially upon theplates, a secondary disk between the plates on the opposite side of theaxis of the plates and with its axis substantially in line with thefirst disk and mounted to shift to positions eccentric to the firstVdisk, mechanism for urging the plates forcibly to the disks, and acoupling connected with one of the plates for the reception of a secondshaft.

4. In a speed-changer, the combination, substantially as setforth, of ashaft, a pair of rotary plates with their faces opposing and on oppositesides of the axis of said shaft, bearings providing journal-support forsaid plates,

a pivotal support for one of said bearings arranged to permit one of theplates to rock relative to the other upon an axis at right angles ltosaid shaft, a disk carried by said shaft between the faces of theplates, means for shifting said disk radially upon the plates, asecondary disk between the plates on the opposite side of the axis ofthe plates and with its axis substantially in line with the first disk,a tension-rod connecting the two disks at their axes, a nut upon saidrod for urging the plates forcibly to the disks, and a couplingconnected with one of the plates for the reception of a second shaft.

5. In aspeed-changer, the combination,sub stantially as set forth, of ashaft, a pair of rotary plates with their faces opposing and on oppositesides of the axis of said shaft, bearings providing journal-support forsaid plates, a pivotal support for one of said bearings arranged topermit one of the plates to rock relative to the other upon an axis atright angles to said shaft, a disk carried by said shaft between thefaces of the plates, means for shifting said disk radially upon theplates, a secondary disk betweenthe plates on the opposite side of theaxis of the plates and with its axis substantially in line with thefirst disk, a tension-rod connecting the two disks at their axes, a nutupon said rod for urging the plates forcibly to the disks, fiexibleunionsl between the tension-rod and the plates, and a" couplingconnected with one of the plates for` the receptionof a second shaft.

6. In a speed-changer,the combination, substantially as set forth, of ashaft, a pair of rotary plates with their faces opposing and on oppositesides of the axis of said shaft, bearings providing journal-support forsaid plates, a pivotal support for one of said bearings arranged topermit one of the plates to rockv relative to the other upon an axis atright angles to said shaft, a disk carried by said shaft between thefaces of the plates, means for shifting said disk-radially upon theplates, a secondary disk between the plates on the opposite side of theaxis of the plates and with its axis substantially in line with thefirst disk, a tension-rod connecting the twoA disks at theiraxes, a nutupon said rod for urging the plates forcibly to the disks, ball-bearingsbetween the tension-rod and the'plates, and a coupling connected withone of the plates for` the reception of a second shaft.

7. In aspeed-cliangei-,the combination, substantially'as set forth, of aflexible shaft, a pair of rotary plates withtheir faces opposing and onopposite sides of the axis of said shaft, bearings providingjournal-support for said plates, av pivotal support for one of saidbearings arranged to permit oneof the plates to rock relative to theother upon an axis at right angles to said shaft, a disk carried by saidshaft between the faces of the plates, means for shifting said diskradially upon the plates, a secondary disk between the plates on theopposite side of the axis of the plates and with its axis substantiallyin line withthe first disk, mechanism for urging the plates forcibly tothe disks, a coupling connected with one of the plates for the receptionof a second shaft, and oil-saucers having channels to convey oilvertically through said disks.

8. In a speed-changer, the combination, substantially as set forth, of ahousing', a vertical shaft journaled in said housing, horizontalplate-bearings carried by the housing on opposite sides of said shaft,trunnions connecting said bearings andthe housing and having their axesat right angles to said shaft, plates having hubs mounted to rotate andslide in said bearings, a tension-rod connected articulately with thetwo plates and provided with means for drawing the plates toward eachother, a disk carried by said shaft between the plates, means foradjusting said disk radially upon the plates, a secondary disksupported'by the housing between the plates on IOO IIO

the side of the plate-axis opposite the first I disk, and a couplingconnected with oneof the plates for the reception of a second shaft.

9. In aspeed-changer, the combination, substantially as set forth, of ahousing, a vertical Ashaft journaled in said housing, horizontalplate-bearings carried by the housing on opmeans for drawing the platestoward each other, a disk carried by said shaft between the plates,means for adjusting,` said disk radially upon the plates, a secondarydisk supported by the housing between the plates on the side of theplatesaxis opposite the first disk and free from lateral restraintexcept by the plates, and a coupling connected with one of the platesfor the reception of a second shaft.

l0. In a speed-changer, the combination, substantially as set forth, ofa shaft, a pair of rotary plates with their faees opposing,` and onopposite sides of the axis of said shaft, bearings providingjournal-support for said plates, a pivotal support for one of saidbearings arranged t0 permit one 0f the plates to roek relative to theother upon an axis at right angles to said shaft, a disk carried by saidshaft between the faces of the plates, means for shifting' said. diskradially upon the plates, a secondary disk between the plates on theopposite side of the axis of the plates and with its axis substantiallyin line with the first disk, a tension-rod articulately coupled to thetwo plates, a Collar splined on the rod and serving as part of thecoupling system, a nut threaded upon the rod exterior t0 said splinedCollar, and a pin-and-slot provision between said Collar and one of saidbearings to serve in preventingthe rotation of said collar and rod.

ADOLPH L. DE LEEUW.

iVitnesses:

ELMER R. SHIPLEY, M. S. BELDEN.

